Metal door.



P. E. HEGSTEDT.

METAL DOOR.

APPLICATION man 1uNE26, 1913.

Patent@ May4,1915.

2 SHEETS-SHEET P. E. HEGSTEDT.

i METAL nooR,

' APPLICATION FILED JUNEZG, 1913. Llglo Patented May 4, 1915,.

2 SHEETS-SHEET 2 A T TGENZY PETER EDWARD HEGSTEDT, OF vJAMES'OWN, NEW YORK.

METAL DOOR. 'f'

Specification of Letters Patent.

Patented May A1, 1915.

Application ala June ze, i913. serial No. frases.

T0 all whom 'it may concern.'

Be it known that I, PETER EDWARD HEG srnnr, a citizen of the United States of america, and a resident of the city of .l amestown, county of Chautauqua', and State of N ew York, have invented certain new and useful Improvements in Metal Doors, of which the following is a full, clear, and eX- act description.

My invention relates generally to metallic doors and like sheet metal structures and more particularly to tire-proof doors.

The general object of my invention has been to provide a metallic door, the parts of which may be. separately painted, japanned or otherwise protected and prevented from rust or corrosion both on the inside and outside before assembling. y t

Another object has been to provide a door which may be easily and quickly assembled and in such a. manner that the paint, japan or other protective covering will not be burned off or any parts of the metal door buckled or bent due to the application of heat, which results when the door parts are welded together. Moreover, after my door is assembled there are no holes to be filled with solder, putty or other filler. Thus the assembled door presents a very neat finish.

Another object has been to provide a door in which the molding or other ornament-ation shall be made integral with stiles and cross rails and to otherwise reduce the number of parts used in the completed door.

vleference is to be had to the accompanying drawings forming part ofythis specification, in which like characters of reference indicate like parts'throughout the several views of which:

Figure 1 is an isometrical perspective view of my door partly assembled and showing portions thereof in section. Fig. 2 is". isometrical perspective view' of the panels of my door partly assembled fragmentary sectional view through one of the cross rails taken on line of Fig. 1. F 4 is a fragmentary sectional view of one of the joints of my door after having been assembled but before being secured and is taken on line 4 1 of Fig. '1. Fig. 5 is a similar section also taken on line 1 -1 of Fig. l showing the parts secured together. Fig. is an isometrical perspective view of one of thiy clamp hooks used in my door.

Fig. 7 is a fragmentary sectional view of a Vmodified form of one of the joints of my door.

Referring to the drawings and more particularly to Figs. 1 and 2, 10 and 11 are the panels of my door, each of which is made of one single piece of material. Each of these panels is provided along narO its edges with a plurality of slots 12 which extend at right angles with the edge of the panel. These panels are also provided With similar slots 12a across the central portion or directly beneath the cross rail of the door.

13 are the clamp hooks of my device, each of which is provided with` acentral separator lug 14.- and on each side ofv said lug with a clamp prong 15, thus formingp'arallel slots 16. A separator 17 is also provided at the opposite end of the hook and at the outer end thereof is provided a. U-shaped clamp 18. The clamp prongs 15 .of one of the hooks 13 are inserted in each pair of registering slots 12 in the panels 10 and 11, with the U-shaped clamp 18 extending beyond the edge of the panels. The panels are brought down against the separator 14 and 17, 'whereupon the U-shaped clamp 18 is bent over at right angles and clenched down on the outside of the panels, thus securely holding the same together. The clamp hooks which are used in the slots 12il are not provided with the U-shaped clamp The space between the panel plates 10 and 11 is preferably filled with asbestos,

thus making the `structure better able to resist fire. s 19 and 20 are the stiles of my door and 21 and 22 are the upper and lower cross-rails respectively.

23, 23 are the central crossrails of my door. The stiles 19 and 20 and upper and lower cross rails 21 and 22 respectively are each formed preferably of one piece of material, bent so as to form a hollow rect-angular body, having the desired molding or other ornamentation formed at the inner edges thereof. The top and bottom cross railsl are provided at each end on each side with iianges 2-1 which are bent at right angles with the rails. 4The cent al cross rails 23 are each formed with the molding along their edges and are also provided at their ends with i-iglita1igled flanges 25. The'stilcs 19 and 2O where they contact with the cross sie J was 2 1, 2e :maza havens `molding Cut' away' and are provided with right-angle flanges 26: y 27 are interlocking blocks, each of which is provided on tvvo of its 'opposite sideswith a central projecting lug 28' and two parallel grooves 29 and 30 adjacent ,to'eaclr side of or con 'enienc'e of 'illustration,'.

said.- lug.. I* interlocking blocks nection With the'croes rails 22 and 23, but it is to be understood that` such interlocking blocks -are tothe usc-lat" each end of s uch cross rai l s', These ll'oeks yarearranged so formed inI thel blocks. I l To strengthen thestructure of the door' that the right-'angle ianges of the cross lrails and Stiles. engage ywith i and to close the upper and lovver ends of the Stiles 1,9 and 20,1 provide cr'oss bars 31, 31 which eXtend across' f 'the top and bottomy of', thefd'oor and justinside the' top and bottomy cross-rails. vThe materialy at the upper andi lowerendsof the, stiles 1 9 Iand 20 is p reerably folded infat right angles, as shown in Eig. A1, andl secured'to said cross bars 31, preferably by rneans of flat-headed machine screws.

32 are between the outer@ snrfaces'of 'eachof the panels 1 0 and 1l and vinto the slots-16 and` beneath 'theclanip prongs 15A lof the clamp c hooks 13v after. thecross rails and stiles1 have blocks`27 which is;accomplished,preferably l by the use ofajdrop hammer. When thesev projections @have V.been riveted' down, the. right-angle Aflanges' formed on the vcross rails y been'y placed in position on the panels.l Afm ter the lock strips have been driven in place, allgthat remains t9 be done is to rivet down the projectingld'gs 28 lof the interlocking and Stiles will be .securelylloclred' Within the I slots formed 1in theinterlocking blocks land trage/ther.l Inthe odiication shown iii-Fig. 7, the

interlockingl block '33 is provided in' each side With a slot 34 in'vvhich the flanges etv the cross rails and stiles are placedE `Aiiter` theffparts have `been assembled, stripv `35 is,

forced vinto the slot' 34 andbetvveenv the flanges ot adjacent parts thus securely fasthe exact embodiment herein"y shovvn and d`escribdj v Having thnsdeseribediny invention, `what Iclaiin'isz' 'l arenot shown in conv the slots 29 andBOf lookingl strips Vwhich are. driven in Y.

firmly and securely hold the doorparts Ini'finetelfpanelstrnictiirev'ofthecharacter described, the combination with a U- 'shaped stile having flanged .edges and two parallelcrossfrails spaced apart, each of such rails having' its endA edge flanged, of ra rectangular interlocking block provided on each ci twoof its opposite sides with one central 'projecting lug and parallel grooves 4adjacent td each of said lugs, said block beingso arranged that one of the iiangesof saidstile and crossrail will engage With the grooves on one side of said block and the opposite flanges' of said 'stilej and cross rail wille engage with the grooves on the other. side of said block, whereby the said stile and-crossyrail may be' securely locked in place by riveting down the projecting lugs. Q. Ina metal panel structure of' the char- "acter described, the `combinationwith a AU- shaped stile having 4right-angled flanged edges andI a U-shaped cross rail having its two opposite 'end `edges flanged at right angles, of an interlockingblock provided on each ojf-two of its opposite edges With one central projectinglug and narrow-parallel grooves adjacent vto each of said lugs, said block being soarranged that one 'of the vflanges ot said'stileand, cross rail `Will engage with the grooves on one, side of said bloclrand the opposite ilanges of said stile and crossrail will engage with the grooves on the-otherside of said block, whereby the saidstile -andfcross rail may be securely locked in4` place by riveting down the-projectingV lugs. l i

f 3. In a metal panelstrncture of the character described, the combination with a U shaped stile having right-angled flanged edgesand two parallel cross rails spaced apart, each having their end edges anged at rightangles, oi an interlocking block provided .on each of .two Aof its; opposite edgeswith a slot, said block being so arranged that jone of the vlangcs olf said stile l and the flange of oneoi said cross. rails will oi?` said blootl and strips longer than the depth of the said grooves` whereby `the said v strips may jvbe inserted in theV grooves'of the said block, andthe stile .and cross 1iails 'may be -locked in place by riveting the said strip over the said stile and cross rails.

In testimony. Where-of I have hereunto signed my. name in the presence of two' subscribing lWitnesses.

(BETER EDWARD HEGsTEnT. Witnesses-:j ,lf i i i OSCAR NoRnN, Apres? ANDERSON.. 

